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Current coordination control method of mixed excitation motor

A hybrid excitation motor and control method technology, applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve the problems of no general control method for motors, etc., to save energy costs, improve utilization and efficiency high effect

Inactive Publication Date: 2015-04-29
扬州市新港电机有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Although the types of hybrid field flux switching motors are developing rapidly, there is no general control method suitable for this type of motors

Method used

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  • Current coordination control method of mixed excitation motor
  • Current coordination control method of mixed excitation motor
  • Current coordination control method of mixed excitation motor

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Embodiment Construction

[0028] In order to solve the problems existing in the prior art, the present invention proposes a current coordinated control strategy for the hybrid excitation motor, so that the electromagnetic loss of the motor has a functional relationship with the armature current, the internal power factor angle, and the excitation current. According to the input The mechanical speed and output mechanical power of the motor and other parameters of the motor are solved to solve the armature current, internal power factor angle and excitation current, so that the electromagnetic loss of the motor can be minimized, and the optimal control of the motor can be realized, and a calculation hybrid Flux Regulation of Excited Motors α ( α = the permanent magnet flux of each phase winding / the maximum value of the total flux of each phase winding) so that the method with the highest efficiency when the hybrid excitation motor is running at the normal operating point.

[0029] The present invention ...

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Abstract

The invention discloses a current coordination control method of a mixed excitation motor, and belongs to the technical field of motor drive and control. The current coordination control method comprises the following steps: establishing an accurate mathematic model of function relations between electromagnetic loss of the motor and an armature current, an internal power factor angle and exciting current, and solving an optimal combination of the armature current, the internal power factor angle and the exciting current according to performance requirements of output mechanical rotating speed and output torque of the motor as well as other parameters so that the electromagnetic loss of the motor is minimized and the optimal control of the efficiency of the motor is realized. Based on this, a method of calculating a magnetic flux adjusting rate of the mixed excitation motor so as to make the mixed excitation motor be maximal in efficiency when operating at a normal working point, is further provided. An implemented object of the invention is the mixed excitation motor, and the current coordination control method has the advantages of maximizing the efficiency of the motor, improving the utilization rate of energy, and saving the energy cost.

Description

technical field [0001] The invention belongs to the technical field of motor drive and control, in particular to the general control technology of hybrid excitation motors. Background technique [0002] For a long time, most of the permanent magnet motors studied by scholars at home and abroad mostly adopt the rotor permanent magnet type. This is because the traditional AC synchronous motors install the excitation windings that establish the air gap main magnetic field on the rotor poles. In the rotor permanent magnet motor, the permanent magnet material is used to replace the excitation winding, which reduces the copper loss, the volume and weight of the motor are greatly reduced, the structure is simple, the maintenance is convenient, and the operation is reliable. In terms of power density, torque inertia and efficiency Both surpass the traditional DC motor and asynchronous motor, and are an important development direction of high-efficiency and energy-saving motors, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14
CPCY02P80/10
Inventor 花为吴中泽程明吴虹吴汉周
Owner 扬州市新港电机有限公司
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